Features
• Up to 25 MHz external clock input
• ±320 mV full scale analog input range
• 16 bits resolution, no missing codes
• 86 dB typical SNR
• -83 dB typical THD
• 13 bits typical ENOB
• Low Voltage Differential Signaling (LVDS) and Single - ended (TTL/CMOS)
options
• –40°C to +125°C extended industrial temperature range
• SO-16 wide package
• 30 kV/μs typical High Common-mode transient immunity
• 6000 VPEAK Isolation Voltage VIOTM
• 1200 VPEAK Working Voltage VIORM
• UL1577 certified, File Number: E362869

Application
Current or voltage sensing in:
• Industrial motor control
• Solar inverter
• UPS
• Electric vehicle charger
• Telecom and server power supply

Description
The ISOSD61 is a galvanic isolated second order Sigma-Delta modulator based on
embedded transformer coupling technology. It converts an analog input signal with
maximum range of ±320mV into a high speed, 25 Msps, 1-bit digital data stream.
The signal information can be rebuilt by means of a digital filtering. The modulator
is isolated from the digital I/O section through a high-speed isolated data coupling,
whose performances are far better than other isolated transceivers like optocouplers.